Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8460064 | Method of dressing barrel worm-shaped tool, dressing apparatus, and internal-gear grinding machine | Yoshikoto Yanase, Masashi Ochi | 2013-06-11 |
| 5325634 | Hourglass worm gear | Tohru Kobayashi, Nobuyuki Tomita, Tsunetoshi Sonohara, Hiroshi Kawada, Shigeyuki Shimachi | 1994-07-05 |
| 5235786 | Hourglass worm gear | Tohru Kobayashi, Nobuyuki Tomita, Tsunetoshi Sonohara, Hiroshi Kawada, Shigeyuki Shimachi | 1993-08-17 |